包含在文件中的每一行刪除重複出現的字符串

Question

我有一個看起來像這樣的文件：

[hello] - one 
[hello] - two 
[hello] - three 
[hello] - four 

我要刪除「[你好] - 」每行，以便它會給我

one 
two 
three 
four 

Answer 1

試試這個：

cut <filename> -d" " -f3

Answer 2

我會去與cut，但這裏有一些其他的選項：

隨着awk：

$ awk -F' *- *' '{ print $NF }' << EOF 
> [hello] - one 
> [hello] - two 
> [hello] - three 
> [hello] - four 
> EOF 
one 
two 
three 
four 

隨着sed：

$ sed 's/^\[hello\] - //' << EOF 
> [hello] - one 
> [hello] - two 
> [hello] - three 
> [hello] - four 
> EOF 
one 
two 
three 
four